One morning, Roy wakes up and realises he is being followed by a wispy little cartoon cloud. Unlike other cartoon clouds, this one just won't go away.

With Becky's help, Roy tries everything he can think of to make the cloud disappear, but nothing works! Roy is frustrated. The crosser he gets, the bigger and grumpier the cloud becomes. This is the worst day ever, and Roy begins to worry that Cloudy is here to stay...